Installation Instructions; Choosing Proper Location For Unit - Dometic 459146.70X Installation & Operating Instructions Manual

INSTALLATION INSTRUCTIONS

A.

Choosing Proper Location For Unit

This unit is specifically designed for installation on the roof
of a recreational vehicle (RV). When determining your
cooling requirements, the following should be considered:
● Size of RV;
● Window area (increases heat gain);
● Amount of insulation in walls and roof;
● Geographical location where the RV will be
used;
● Personal comfort level required.
1. Normal locations-The unit is designed to fit over
an existing roof vent opening.
2. Other locations-When no roof vent is available
or another location is desired, the following is
recommended:
a. For one unit installation: The unit should be
mounted slightly forward of center (front to
back) and centered from side to side.
b. For two unit installations: Install one unit 1/3
and one unit 2/3's from front of RV and cen-
tered from side to side.
It is preferred that the unit be installed on a relatively flat
and level roof section measured with the RV parked on a
level surface. See table below for maximum acceptable tilt.
Model
Number
459146
B59146
After Location Has Been Selected:
c. Check for obstructions in the area where unit
will be installed. See (FIG. 1) & (FIG. 2).
Dimensions Are Nominal
FIG. 1
13-1/8"
34-7/8"
18"
Center Line Of Unit
Keep This Area Free Of Obstructions
Max
Tilt
15°
Model
459146
29-7/8"
Roof Opening
Front
FIG. 2 Dimensions Are Nominal
12-7/8"
18"
Center Line Of Unit
Keep This Area Free Of Obstructions
d.  Maintain structural integrity.
Otherwise damage to product and/or RV
could occur.
The roof must be designed to support 130
pounds when the RV is in motion. Normally
a 200 lb. static load design will meet this
requirement.
e. Check inside the RV for air distribution box
(hereinafter referred to as "ADB") obstruc-
tions (i.e. door openings, room dividers, cur-
tains, ceiling fixtures, etc.). See (FIG. 3).
FIG. 3
23-1/8"
2-5/8"
Dimensions Are Nominal
11-9/16"
3-7/16"
Roof Opening
3-7/16"
6"
5
27-5/8"
29-5/8"
Roof Opening
Front
21-1/8"
11-9/16"
21-1/8"
2-7/8"
Model
B59146